Titre du document / Document title

Nutritional studies on rats and fish (carp Cyprinus carpio) fed diets containing unheated and heated Jatropha curcas meal of a non-toxic provenance

Auteur(s) / Author(s)

MAKKAR H. P. S. ⁽¹⁾ ; BECKER K. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Institute for Animal Production in the Tropics and Subtropics (480), University of Hohenheim, 70593 Stuttgart, ALLEMAGNE

Résumé / Abstract

Unheated and heated (121 °C, 66% moisture; 15, 30 and 45 min) Jatropha meals of non-toxic provenance from Veracruz state in Mexico were evaluated using rats and fish. With rats, the weight gain was highest for the casein diet followed by heated (30 min; only this treatment was studied using rats) and unheated Jatropha meal containing diets. The protein efficiency ratio (PER) for unheated and heated Jatropha meal containing diets was 37 and 86%, respectively, of the casein diet. On the other hand, the body weight gain, PER and feed conversion ratio of fish were statistically similar for unheated and heated (15, 30 and 45 min) Jatropha meal containing diets fed for a period of 35 days. Although these parameters were statistically similar for the unheated and heated Jatropha meal containing diets, the body weight gain, PER and protein productive value were highest and the feed conversion ratio lowest with 15 min heated Jatropha meal, suggesting that the heat treatment for 15 min is optimal for the meal. Trypsin inhibitor and lectin activities decreased drastically (> 83 and 99%, respectively) after 30 and 45 min of heat treatment and after 15 min, the residual lectin activity was negligible and the residual trypsin inhibitor activity was 34%. These results, together with the nutritional parameters investigated, imply that Jatropha trypsin inhibitors and lectins do not have any adverse effects on carp at least up to 35 days of feeding. The nutritional value of Jatropha meal of the non-toxic provenance is high, and potential exists for its incorporation into the diets of monogastrics, fish and possibly humans.

Revue / Journal Title

Plant foods for human nutrition   ISSN 0921-9668 

Source / Source

1999, vol. 53, n^o3, pp. 183-192 (19 ref.)

Langue / Language

Anglais
Revue : Neerlandais

Editeur / Publisher

Springer, Heidelberg, ALLEMAGNE  (1987) (Revue)

Mots-clés anglais / English Keywords

Cyprinus carpio ; Plant protein ; Weight gain ; Enzyme inhibitor ; Jatropha ; Seeds ; Flour ; Heat treatment ; Rat ; Carp ; Oil plant(vegetal) ; Feed conversion efficiency ; Lectin ; Toxicity ; Mexico ; Nutritive value ; Pisces ; Vertebrata ; Euphorbiaceae ; Dicotyledones ; Angiospermae ; Spermatophyta ; Rodentia ; Mammalia ; Feeding ; Laboratory animal ; Central America ; America ;

Mots-clés français / French Keywords

Cyprinus carpio ; Protéine végétale ; Prise poids ; Trypsine ; Inhibiteur enzyme ; Jatropha ; Graine ; Farine ; Traitement thermique ; Rat ; Carpe ; Plante oléagineuse ; Efficacité alimentaire ; Lectine ; Toxicité ; Mexique ; Valeur nutritive ; Jatropha curcas ; Pisces ; Vertebrata ; Euphorbiaceae ; Dicotyledones ; Angiospermae ; Spermatophyta ; Rodentia ; Mammalia ; Alimentation ; Animal laboratoire ; Amérique Centrale ; Amérique ;

Mots-clés espagnols / Spanish Keywords

Cyprinus carpio ; Proteína vegetal ; Ganancia peso ; Inhibidor enzima ; Jatropha ; Semillas ; Harina ; Tratamiento térmico ; Rata ; Carpa ; Planta oleaginosa ; Eficiencia de conversion del pienso ; Lectina ; Toxicidad ; México ; Valor nutritivo ; Pisces ; Vertebrata ; Euphorbiaceae ; Dicotyledones ; Angiospermae ; Spermatophyta ; Rodentia ; Mammalia ; Alimentación ; Animal laboratorio ; America central ; America ;

Localisation / Location

INIST-CNRS, Cote INIST : 7104, 35400008807662.0010